What is Functional Testing?

What is Functional Testing?

Functional testing is defined as a type of testing that verifies that each function of the software application works in conformance with the requirement and specification. This testing is not concerned with the source code of the application. Each functionality of the software application is tested by providing appropriate test input, expecting the output, and comparing the actual output with the expected output. This testing focuses on checking the user interface, APIs, database, security, client or server application, and functionality of the Application Under Test. Functional testing can be manual or automated....

Purpose of Functional Testing

Functional testing mainly involves black box testing and can be done manually or using automation. The purpose of functional testing is to:...

What to Test in Functional Testing?

The goal of functional testing is to check the functionalities of the application under test. It concentrates on:...

Functional Testing Process

Functional testing involves the following steps:...

Type of Functional Testing Techniques

There are various types of functional Testing which are as follows:...

Functional Testing vs Non-Functional Testing

Below are the differences between functional testing and non-functional testing:...

Functional Testing Tools

Below are the tools for functional testing:...

Best Practices for Functional Testing

Automate: Functional tests can be repetitive, time-consuming processes so the more the tests are automated the faster one can identify and correct defects, and the more savings can be achieved in time and costs. It may not be possible to automate all test cases, so automating important test cases can improve the test ROI. Dedicated automation team: Automation requires time, effort, and a special skill set. It is considered best to allocate automation tasks to those who are equipped to accomplish them. Create test early: It is best to create test cases when the project is in its early phases as the requirements are fresh and it is always possible to amend test cases later in the project development cycle. Pick the right tests: It is very important to pick the right test cases to automate. Some tests require setup and configuration during and before execution, so it’s best not to automate them. Automate tests that need to be executed repeatedly, tests that are prone to human error. Prioritize: Testers have finite time and budget, so it is not possible to test each and every feature in the application. Consider high-priority functions first to create test cases. Test frequently: Prepare a basic test automation bucket and create a strategy for frequent execution of this test bucket....

Benefits of Functional Testing

Bug-free product: Functional testing ensures the delivery of a bug-free and high-quality product. Customer satisfaction: It ensures that all requirements are met and ensures that the customer is satisfied. Testing focused on specifications: Functional testing is focused on specifications as per customer usage. Proper working of application: This ensures that the application works as expected and ensures proper working of all the functionality of the application. Improves quality of the product: Functional testing ensures the security and safety of the product and improves the quality of the product....

Limitations of Functional Testing

Missed critical errors: There are chances while executing functional tests that critical and logical errors are missed. Redundant testing: There are high chances of performing redundant testing. Incomplete requirements: If the requirement is not complete then performing this testing becomes difficult....

Conclusion

In conclusion, Functional testing will check that each function of a software application has been working as expected and focuses on the user interface, APIs, and functionality. While it improves product quality and customer satisfaction, it may miss the major errors and involve repeated testing. overall the important to deliver a bug-free and high-quality product as output....

Frequently Asked Questions on Functional Testing

What is functional testing vs manual testing?...